As most people who have followed Yuki Saito know, he earned the nickname Handkerchief Prince in high school because he used to wipe his sweat on the mound with a handkerchief. In reference to that, Sho Nakata made a brief attempt at being funny:

Was it handkerchief? Or bath towel?

Nakata then called him out (in a friendly sort of manner, I'm guessing) by saying:

He might be the top amateur player right now, but I'm in the pros.

The irony there, of course, is that both players struggled this season: Saito didn't have a very good Fall and Nakata was limited to just 38 plate appearances at Ichi-gun (although he did quite well at Ni-gun).